Does The Size Of My HVAC Unit Really Matter? - Ask The Expert Episode 311
Duration: 1:45

Today's question is from our website.
"Hey Dan. I will be using the MRCOOL DIY 12k in a 350 sq ft. outbuilding. Is the 12k too big?"
12k is generally rated for up to 500 square feet, but it depends on stuff like climate and insulation.
It should probably be ok since most modern units have variable speed compressors.
But don't get a 12k unit for something like an 800 square foot space.